Effects of La2O3 and Gd2O3 on some properties of Ni-Zn ferrite

被引：53
|
作者：
Sun, JJ [1 ]
Li, HB [1 ]
Sun, GL [1 ]
机构：
[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 250卷 / 1-3期
关键词：
Ni-Zn ferrite; rare earths; substitutions; magnetic properties; dielectric properties;
D O I：
10.1016/S0304-8853(02)00403-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of Fe substitution by La2O3 and Gd2O3 (Ni0.5Zn0.5Fe2-xRxO4, R = La or Gd, x = 0-0.04) on the structure, magnetic, and dielectric properties of Ni-Zn ferrite are investigated. With increasing R2O3, the relative density of sintered bodies decreases, while the lattice parameter increases. La2O3 and Gd2O3 both tend to increase the cut-off frequency, decrease the initial permeability (mu') and magnetic loss tangent (tg delta(mu')) in the range of 1 M - 300 MHz; while they flatten the epsilon'-f curves, increase epsilon' values and decrease dielectric loss tangent (tg 6(e')) in the range of 1 M-40 MHz. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：20 / 24
页数：5
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